Lock for locking window sashes and the like



March 18, 1969 w. R. MORGAN, JR 3,433,516

LOCK Ron LOCKING WINDOW SASHES AND THE-LIKE Filed Dec. 23, 1966 WI 1 n! I United States Patent 4 Claims Int. Cl. Ec 5/02 ABSTRACT OF THE DISCLOSURE This invention relates to a lock for use with a window sash. It consists of a spring retracted sliding pin positioned within a sleeve and arranged to cam the sleeve outward so as to embed projections on the sleeve into the window sash and thereby retain the lock in place.

This invention relates to a lock for locking window sashes and the like.

One of the objects of this invention is to provide a lock for window sashes or the like which may be anchored in a window or the like without requiring the use of any extraneous anchoring or fastening means and in which the window may be locked in either a closed or partially closed position.

Another object of this invention is to provide a window sash lock consisting essentially of three parts, which may be inexpensively produced, and which may be readily secured to the window sash in a minimum of time and with a minimum of effort.

Another object of this invention is to provide a window sash lock which would make it impossible to remove or open the lock by an unauthorized person from the exterior of the window.

Other objects will become apparent as this description progresses.

In the drawings:

FIGURE 1 is an elevational view from inside the room of a window showing my invention applied thereto.

FIGURE 2 is a sectional view taken on line 22 of FIGURE 1, with the pin or bolt in locking position.

FIGURE 3 is a sectional view taken on line 33 of FIGURE 1, but with the pin or bolt retracted in unlocking position.

FIGURE 4 is a view similar to FIGURE 3, but with the pin or bolt in locking position.

FIGURE 5 is a sectional view taken on line 5-5 of FIGURE 2.

FIGURE 6 is a view of the pin or bolt.

FIGURE 7 is another view of the pin or bolt.

FIGURE 8 is a view of the slotted sleeve.

FIGURE 9 is a view taken on line 9-9 of FIGURE 8, and

FIGURE 10 is a sectional view taken on line 1010 of FIGURE 2.

FIGURE 1 shows a window frame 10 with the conventional upper and lower sashes 12 and 14. The lower sash 14 is the inner sash and the upper sash 12 is the outer sash. As shown in said figure, the window sashes are 3,433,5 l6 Patented Mar. 18, 1969 completely closed and are locked in this closed position, however, the window sashes 12 and 14 may be moved relative to each other to open either the top sash 12 or the bottom sash 14 and may be locked in such an open position for ventilating purposes, as will be more fully explained hereinafter.

The window sash lock of this invention is formed essentially of three part and comprises a pin or bolt generally designated by the numeral 16, a slotted sleeve generally designated by the numeral 18, and a coil spring generally designated by the numeral 20, which fits around the pin or bolt 16 and is in engagement at one end with the inner end of the sleeve 18 and at its other end with the head of the pin or bolt 16. The pin or bolt 16 is integrally formed with a squared head or knob 22 having a concaved peripheral surface 23 whereby the head may be manually engaged by the fingers of a persons hand. The pin or bolt 16 is provided with a pair of diametrically spaced raised members, hereinafter defined as locking nubs 24. Each locking nub 24 has a tapering or inclined surface 25; the taper is at an angle of approximately 45. The taper of the locking nub performs a very important function in relation to the taper on the sleeve with which it is to be engaged, as will more fully hereinafter appear. The outer end of the pin or bolt has a centrally positioned pointed end 26.

The sleeve 18 within which the pin or bolt 16 slides is provided with a pair of diametrically spaced elongated slots 28 which are open at their outer ends but are closed at their inner ends. These slots extend for a major portion of the length of the sleeve. The inner ends of the slots 28 are designated by the numeral 30 and they serve to limit the withdrawal of the pin or bolt 16 when the pin is positioned in its retracted position, as shown in FIGURE 3.

The outer end of the sleeve 28 is also provided with a pair of diametrically spaced locking notches 32, equally spaced from the elongated slots 28. The locking notch 32 has one side 34 longer than the opposite side 36. The short side 36 has an outer end 38 which is of arcuate shape or has a radius. The outer end 38 of the sleeve is adjacent the elongated slot 28, so that when the pin or bolt 16 is rotated and moved axially within the sleeve, as will be explained, the locking nub 24 will ride over the outer end 38 of said shorter side and will not be positioned to rest against said outer end. The inner edge 40 of each of the locking notches 32 is tapered as at 42 at a 45 angle, as best seen in FIGURE 10, complementary to the taper 25 of the locking nubs 24, so that when the locking nub 24 is in engagement therewith the tapered surface 25 of the locking nub 24 is positioned and wedged inside the sleeve at said contact point. This serves a very important function, as will be hereinafter explained.

The sleeve 18 is provided with a plurality of anchoring spurs 44 which are integrally formed with said sleeve and may be the portions which are struck out from the sleeve. The pair of anchoring spurs 44 on each side of the sleeve are offset with respect to each other, as best shown in FIGURE 2. The anchoring spurs extend radially of the body of the sleeve and are substantially parallel to the body of sleeve, with the outer ends of the spurs facing 3 inwardly, as best shown in FIGURES 3 to 5. The outer ends of the anchoring spurs are pointed. The anchoring spurs 44 are adapted to lock with the inner sash 14 to anchor the sleeve 18 in the sash and to prevent withdrawal of said sleeve.

The coil spring 20 is positioned around the pin or bolt 16 with one end of the coil spring resting adjacent the head 22 of the pin and the opposite end resting against the inner end 46 of the sleeve 18. The spring tends to urge the pin 16 rearwardly in a direction from the sleeve but, obviously, the pin cannot become disengaged from said sleeve. The spring also draws the outer sash against the inner sash.

In securing the device of this invention to a window sash, the two sashes 12 and 14 are positioned in their fully closed position as shown in FIGURE 1. The bottom of the upper sash 12 will be in overlapping engagement with the top of the bottom sash 14. A hole or bore 50 is drilled through the lower sash 14 and a partial hole or bore 52 is drilled into the upper sash 12. The two holes 50 and 52 are thus in horizontal alinement when the window sashes are in closed position. At the same time an additional hole or spaced holes 54 may be drilled in the upper sash 12, dependent upon where it is desired to provide and limit the relative openings between the sashes. For example, as shown in FIGURE 1, a hole 54 may be drilled in the upper sash, and correspondingly other additional spaced holes may be drilled in said upper sash. The said holes 54 are in vertical alinement with the hole 52 in the upper sash 12 and the hole 50 in the lower sash 14 so that when the window sashes are moved together relative to each other the hole 50 will be in vertical and horizontal alinement with one of the holes 54. This serves to permit the window sashes to be opened for ventilation and yet remain in a locked position.

With the sashes 12 and 14 in closed position, as shown in FIGURE 1, the device forming this invention is inserted in the bore 50 of the lower sash. With the device assembled, that is, with the pin 16, sleeve 18 and spring 20 in cooperative engagesment as a unit, the pin 16 and sleeve 18 are hammered into the bore or hole 50 of the lower sash 14 to the position shown in FIGURE 4. The diameter of the bore 50 is substantially that of the outside diameter of the body of the sleeve 18. As the sleeve is hammered into the bore the closed ends of the anchoring spurs 44 will enter the bore 50 and the spurs will be momentarily pushed inwardly or retracted towards the sleeve body, however, they will subsequently assume the position shown in FIGURE 3 to engage the window sash around the bore 50 and prevent withdrawal of the sleeve 18. The anchoring spurs 44 not being in alinement will increase the anchorage of the sleeve in the sash.

The pin or bolt 16 is accessible from the inside of the room but not from the outside. The pin or bolt 16 is shown in FIGURE 3 in its retracted or unlocked position. In this position it is out of engagement with the bore or hole 52 in the upper sash 12 and the two sashes 12 and 14 may be moved relative to each other. With the pin 16 in its retracted position the locking nubs 24 are positioned adjacent the inner closed ends 30 of the elongated slots 28. The pin or bolt 16 is normally urged to a retracted position by the spring 20. To withdraw the pin to its fully retracted position, shown in FIGURE 3, the pin must be manually retracted, as therein shown.

To lock the two sashes the pin or bolt 16 is slid axially outwardly in the sleeve 18 to the right, as viewed in FIGURES 35, against the compression of the spring 20 so that the locking nubs 24 pass out of the open ends of the slots 28 and then the pin or bolt 16 is rotated clockwise so that locking nubs pass around the arcuate end 38 of the sleeve and enter the locking notches 32, as shown in FIGURE 2. When the pin is manually released the spring 20 will position the pin, as shown in FIGURES 2 and 10, so that the tapered surface 25 of the locking nub 24 is in wedged engagement with the tapered surface 42 of the sleeve 18. In this position the outer end of the pin is in the bore 52 of the upper sash 12 and the upper and lower sashes are locked relative to each other. The pin or bolt 16 cannot be rotated any further in a clockwise direction due to the longer side 34 of the locking notches 32 which act as stops, as the locking nub 24 in engagement with the longer sides 34 will not permit further clockwise rotation. To retract the pin from the locking position shown in FIGURE 2, the pin is pushed axially outward to the right, as shown, and is rotated counterclockwise. The locating nub 24 will pass around the elongated slots 28 where the spring 20 will serve to initially retract the pin, and the retraction, as shown in FIGURE 3, is completed manually. This withdraws the pin 16 from the bore 52 of the upper sash. Obviously the' pin or bolt cannot be completely withdrawn from the sleeve due to the engagement of the locking nubs 24 with the ends 30 of the elongated slots 28.

The tapered locking nubs 24 and the complementary tapering wall 42 of the sleeve will prevent any unauthorized person on the outside from knocking the sleeve 18 out of the lower sash 14. For example, if an intruder were to locate the bore 52 in the upper sash 12 and by a tool T, such as shown in FIGURE 2, attempt to push the sleeve 18 and pin 16 inwardly out of the sash he would find that by hammering away at the pin the pin will move inwardly but in doing so the tapered locking nubs 24 will move inwardly (or to the left as shown in FIG- URE 2) against the complementary tapered wall 42 of the sleeve 18. This will cause the sleeve to further expand or spread in the bore 50 of the inner or lower sash and instead of knocking the sleeve out of the bore will further entrench the sleeve in said bore. Thus, it becomes virtually impossible for an intruder to knock out the sleeve from the inner or lower sash 14.

The pointed end 26 of the pin serves as a marking instrument in that marks may be made by the end 26 on the upper sash so that bores or holes like 54 may be marked off which will be in vertical and horizontal alinement with the pin 16. To find the correct alinement it is merely necessary to lower the upper sash in relation to the lower sash and release the pin so that the marking point 26 makes an impression on the upper or outer sash and this will be the point or points at which additional holes are bored in the upper sash.

The device is made preferably of metal although any other sturdy and durable material may be used. This invention provides a very simple and inexpensive device for locking window sashes and the like relative to each other. It also may be used on slidable doors and windows and the like. In connection with window sashes, the conventional centrally positioned locking means which is only capable of locking windows in a closed position may be eliminated and this device may be secured along only one side of the window sash.

It will be understood that various changes and modifications may be made from the foregoing without departing from the spirit and scope of the appended claims.

What is claimed is:

1. A lock for use with a window sash or the like, said lock comprising a slotted sleeve, a pin slidably supported with said sleeve, a spring associated with said sleeve and pin and normally urging said pin to a retracted position, a locking nub on said pin, said locking nub slidable in the slot of said sleeve, said sleeve having a locking notch to be engaged by said locking nub for holding said pin in locking position, said locking nub having a taper, said sleeve locking notch tapered complementary to said locking nub so that the locking nub when in engagement therewith is positioned partially inside the interior of said sleeve so that if the pin is pushed inwardly the sleeve will be caused to spread and became more firmly anchored in the sash of a window or the like.

2. A structure defined in claim 1 in which the locking notch of the sleeve has adjacent long and short sides so that the pin can be slid axially and rotated with the locking nub passing around the short side but cannot be rotated to pass around the long side.

3. A structure defined in claim 1 in which the sleeve is provided with a pair of diametrically positioned longitudinal slots and with a pair of diametrically positioned locking notches and the pin is provided with a pair of diametrically positioned locking nubs.

4. A structure defined in claim 1 in which the sleeve is provided with means for anchoring the sleeve in the bore of a window sash or the like and in which the anchoring means comprises a plurality of members extending radially of the sleeve body with a portion of said members extending parallel to the sleeve, with the open ends of said members having pointed ends.

References Cited UNITED STATES PATENTS 365,679 6/1887 Gantenberg 29262 1,352,624 9/1920 Polcek 29260 2,016,196 10/1935 Handfield 292-61 3,027,609 4/1962 Parkin et a1. l5l4l.73 X

FOREIGN PATENTS 207,119 11/ 1923 Great Britain.

MARVIN A. CHAMPION, Primary Examiner. JOHN R. MOSES, Assistant Examiner. 

